圆弧的弧长怎么计算?求计算公式
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人气:130 ℃ 时间:2020-03-23 04:23:29
解答
半径=5000
弧1高=2200
半径-弧1高=2800
勾股一下 5000*5000-2800*2800,之后开根号
弦1=4142.463035*2=8284.926071
同理
弧2高=2200-1000=1200
弦2=3249.615*2=6499.231
弦1 高1 弧1
8284.926 2200 9764.105268
弦2 高2 弧2
6499.231 1200 7074.832118
弧1-弧2=2689.273
你要的那段弧长=2689.273/2=1344.637
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